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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS [Abstract]
Net loss	$ (19,180)	$ (25,406)
Other comprehensive (loss), net of tax:
Change in unrealized gain (loss) on investments	3	(1)
Change in foreign currency translation	(3)	0
Total other comprehensive income gain (loss), net of tax	0	(1)
Comprehensive loss	$ (19,180)	$ (25,407)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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